Polish, Clean, and Deburr All Kinds of Automotive Crankshafts Using Mass Finishing Machines From China
  • Inovatec is the best manufacturer of crankshaft polishing machines
  • Cleaning, polishing, deburring, and other mass finishing operations
  • Tub finishers for long and sophisticated parts
  • Seamless crankshaft polishing with centrifugal barrel finishers
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Inovatec MachineryThe ultimate crankshaft polishing machine manufacturer in China

Crankshafts are an integral part of the automotive world. No engine can run without them. Crankshafts are directly related to the overall performance of the engine and they have to be properly polished in order to be efficient.

We, Inovatec Machinery, have been in the mass finishing business for over 20 years. With the experience we’ve gained over the years, we’re determined to provide you with the best crankshaft polishing machines.

5. TVBA tub vibratory finishing machine

Vibratory finishers are a wonder of modern technology. They’re efficient, they’re fast and they provide spectacular polishing results. Tub vibratory finishers take things one step higher with the specialized tub for long parts.

When it comes to crankshafts, they are usually long and sensitive parts. So, it’s not wise to perform crankshaft polishing in a vibratory bowl. That’s where tub vibratory finishers come in.

1. centrifugal barrel machine with automatic unloading

Centrifugal machines are the latest technology in the mass finishing industry. They’re fast, they are efficient and they can do a lot of processing in very little time. For crankshaft polishing, a centrifugal barrel finisher is a great choice.

Centrifugal barrel finishers are fundamentally different from centrifugal disc finishers. Disc finishers are designed for relatively smaller parts that are not suitable for crankshafts. But a centrifugal barrel finishing machine can do the job of polishing crankshafts within minutes.

crankshaft polishing before and after

These machines are designed for high volume industrial usage. The crankshafts are fed from one end for polishing and they come out the other end once the process is done. It’s a great tool to streamline the entire crankshaft polishing process.

Different Types of Crankshaft Finishing

As we’ve already established, no engine is useful without a crankshaft. And when things come to racing, performance is everything. Racing crankshafts are usually made from titanium or aluminum. They’re lightweight and strong to withstand the power.

But one thing that is common for all of them is crankshaft polishing. For racing crankshafts, you can’t go wrong with a tub vibratory finisher from Inovatec.

Same as any vehicle, motorcycle engines have crankshafts as well. These crankshafts are usually smaller in size but they pack as much or more power. Also, motorcycle crankshafts are lightweight parts so they are often made with aluminum.

For crankshaft polishing, we recommend that you invest in a centrifugal barrel finishing machine. Centrifugal finishers are very fast and precise. As motorcycle crankshafts are small, they will easily fit inside a barrel.

Monolithic crankshafts are the combination of the crankshaft itself and the connecting rods. These crankshafts are particularly strong and used for maximum power output.

In order to polish monolithic crankshafts, you should stick to the tub vibratory finishers. Tub finishers protect large parts like crankshafts from damage. And if you operate on an industrial scale, you can install a horizontal polishing machine as well.

Engine parts like crankshafts are manufactured in two primary ways. One is casting and the other is forging. We’ll get the cast crankshafts later; let’s get on with the forged ones. A forged piece of metal means it’s shaped into the object with a forge. Forged parts are strong as the metal is not molten. The structure of the atoms is more even which results in more structural rigidity.

To polish forged crankshafts, you should always use a tub vibratory finisher from Inovatec. And make sure that you use the right media after consulting our support team.

The other type of crankshaft manufacturing is casting. The metal is molten and poured into a mold to form the shape of the crankshaft. It’s cost-effective and easy to produce on an industrial scale.

But cast crankshafts require polishing as well. As you’re dealing with big bulks, it’s best to go with the horizontal crankshaft polishing machine. You can use a tub vibratory finisher as well if you don’t need such a level of scaling.

Assembled crankshafts are those where the individual portions of the crankshaft are separate. They are assembled together to form the crankshaft. You can take it apart at any time you want.

As you can already guess, assembled crankshafts are subject to heavy polishing as well. You can either polish it disassembled or assembled. For disassembled polishing, invest in a centrifugal barrel finisher for faster results. And for assembled polishing, go with a tub vibratory finisher.

Crankshaft Polishing Media

Metal polishing is always great because you can visually see the difference. In order to get things right, you need to make sure that the media you are using is right. For crankshaft polishing, we recommend using either the plastic polishing media or porcelain balls. If you require slight deburring, use ceramic media as well.

Inovatec Machinery – The Best Crankshaft Polishing Machine Manufacturer You Can Find
  • A wide variety of crankshaft polishing
  • All kinds of mass finishing equipment and media are available for purchase
  • Expert support team to guide you in the right direction
  • Best in class crankshaft polisher machines at reasonable costs
Frequently Asked Questions
1. How many crankshaft polishing machines can I buy at once?

Answer: The minimum order is 1 piece. You can buy as many as you want, but we need time to manufacture them.

2. Why is crankshaft polishing media different than deburring media?

Answer: Polishing is mostly a non-abrasive process. And deburring requires abrasive media. That is why polishing media and deburring media are different.

3. Can I use ceramic media for crankshaft polishing?

Answer: If your parts have visible burrs and inconsistencies on the surface, a cycle with slightly abrasive ceramic media is recommended. Otherwise, you can stick to the plastic and porcelain media.

4. How long does it take for you to make one?

Answer: In general, manufacturing a crankshaft polishing machine requires 15-20 days. But if you urgently need one, we can speed up the process upon request.

5. What is the payment term?

Answer: You need to deposit 30% of the price to confirm your order. The rest will be paid before shipping.

Crankshaft Polishing – The Definitive Guide

Crankshafts are the primary parts necessary for the optimum functioning of your engine.

Before the installation of any crankshaft to an engine, it must undergo polishing to ensure its maximum performance.

Now, polishing a crankshaft is not the most straightforward task to do. It requires experience, skills, and patience.

It can be intimidating, especially if you are new to the crankshaft polishing field.

However, in this article, you are going to learn:

  • How to polish your crankshaft effectively and easily
  • The benefits of polishing your crankshaft
  • The advantages of polishing your crankshafts using mass finishing machines.

Keep reading this article to find out more.

1. How can I polish my crankshaft?

Polishing your crankshaft effectively and with ease requires the use of mass finishing machines, polishing media, and polishing compounds.

Three primary mass finishing machines are ideal for polishing your crankshafts.

The first one is the tub vibratory tumbler. It has a robust motor that it uses to shake its polishing tub vigorously.

trough rectangular linear tub vibratory finishing machine

Figure 1 – Tub Vibratory Tumbler

When it shakes its tub, polishing media and your crankshaft will rub each others’ surfaces.

This rubbing of surfaces generates friction, which is necessary for the polishing process to be a success.

After polishing, you do not need to separate your polishing media and polished crankshafts manually.

This machine has a separating sieve, which can be adjusted to fit different sizes of polishing media.

The second primary machine that you can use is the centrifugal barrel finisher.


Figure 2 - Centrifugal Barrel Finisher

Figure 2 – Centrifugal Barrel Finisher

The centrifugal barrel finisher is yet another robust mass finishing machine that uses centrifugal forces to complete the polishing process.

Keep reading this article to find out how the centrifugal barrel finishing machine is an ideal machine for polishing your crankshaft.

The third mass finishing machine is the crankshaft horizontal polishing machine.


Horitonal Type Shaft crankshaft Polishing Machine

Figure 3 – Crankshaft Horizontal Finishing Machine

These machines are simply exceptional.


Check this out:

Unpolished crankshafts are fed into this machine horizontally. They come out from the other end, fully polished.

All the polishing action takes place inside the machine.

The crankshaft horizontal polishing machine is popular nowadays because of its efficiency and effectiveness.


Bottom line:

Mass finishing machines are the ideal way of polishing your crankshafts.


2. What polishing media can I use to polish my crankshaft?

Now, when polishing crankshafts using mass finishing machines, you will need abrasives.

There are several polishing media that you can use to complete the polishing process.

The first one is the plastic polishing media.


plastic media vibratory finishing

Figure 4 – Plastic Polishing Media

Now, plastic is not the most rigid polishing media.

You can use it to carry out light polishing on the surface of your crankshaft.

Plastic media does not crack, neither does it chip under pressure. These features are what make it popular nowadays.

Plastic polishing media is also lighter than other polishing media.

Its lightness attributes lesser consumption of running power by the mass finishing machine.

However, plastic will not polish your crankshaft’s surface to achieve a mirror finish.

Its polish is not shiny.

The second polishing media that you can use is porcelain polishing media.


Figure 5 - Porcelain Polishing Media

Figure 5 – Porcelain Polishing Media

Now, porcelain is more rigid compared to plastic polishing media. It contains elements of ceramic particles.

It is, however, not too aggressive as compared to ceramic or stainless steel polishing media.

These attributes make it an ideal candidate for polishing crankshafts’ surfaces.

The last polishing media that you can use is ceramic media. Now ceramic is only used under certain conditions.


Ceramic Polishing Media

Figure 6 – Ceramic Polishing Media


Check this out:

You can use ceramic media to polish your crankshaft when they need a slight deburring.

Ceramic media is highly aggressive, and it can scratch the surface of your parts if you are not cautious.

All these polishing media come in different shapes and sizes.

These dynamics are necessary for a clean and uniform polish, including the most intricate corners.

Selecting the right shape and size for the polishing process is crucial.

You’d not want to have media lodging in your crankshaft’s cavities or pockets.

These polishing media also need to get into contact with these pockets.

They have to clean every inch of your crankshaft.

All these polishing media also polish exceptionally well when using polishing compounds.


Bottom line:

Polishing your crankshafts by using abrasives is the most effective way of getting rid of blemishes on the surfaces of your crankshafts.


3. How can I polish my racing bike’s crankshaft?

Most racing crankshafts are made from aluminum or titanium. These metal types are light and robust.


Check this out:

When polishing racing crankshafts, the best way is to clean them using a tub vibratory tumblers.

You can decide to use either porcelain or plastic polishing media.

Remember, if your crankshaft requires light deburring, you can decide to use ceramic polishing media.

When polishing these racing crankshafts, you need to be extremely cautious.

One single mistake can result in slight damage, which makes the crankshaft useless.

A tub vibratory polishing machine does not alter the shape or dimensions of your racing crankshafts.


Bottom line:

You cannot afford to damage your racing crankshaft.

Therefore, the best way to polish racing crankshafts is by using a tub vibratory tumbler.


4. How long does it take to polish my crankshaft?

Now, the duration it takes to complete the crankshaft polishing process depends on three primary factors.


Check this out:

The first factor is the polishing media that you decide to use.

Using ceramic media will polish faster than any other polishing media.

It is highly aggressive.

Also, using porcelain media over plastic polishing media will complete the process faster.

However, using ceramic and porcelain polishing media will require your machine to use more energy when polishing crankshafts.

Plastic polishing media is lighter than other polishing media. Synthetic media is 40% lighter than ceramic media.


The second factor is how you decide to handle your machine.

Running the process using the optimum polishing conditions, such as the polishing speed and the use of polishing compounds, matters significantly.

If you decide to use an incredibly fast polishing speed, then the final output will not be good.

Also, the process will take too long to complete if you decide to use an incredibly slow speed.

It will, therefore, become uneconomical.

The third factor is the level of damage on the surface of your crankshaft.


Figure 7 - Dirty Crankshaft

Figure 7 – Dirty Crankshaft

If it requires heavy polishing, then the process will undoubtedly take longer to complete.

Bottom line:

Your decisions significantly affect the quality and efficiency of the polish that you require on your crankshaft.


5. How does the centrifugal barrel finisher polish crankshafts?

When polishing crankshafts using a centrifugal barrel finisher, the machine uses the following technique to clean.

You’ll first have to understand that this machine uses centrifugal forces to polish.

First, the machine has four barrels affixed to a single flywheel which spins.

The flywheel and the polishing barrels spin in opposite directions, respectively, to increase effectiveness and efficiency.

Figure 8 – Centrifugal Barrel Finisher

The machine spins its polishing barrels at an incredibly fast speed. It thus generates powerful centrifugal forces.

These forces then cause immense stress on the polishing media and the target crankshaft.

This stress causes media to polish your crankshaft effectively by abrading its (crankshaft’s) surface.

You can also use polishing compounds with this machine.

You can use this machine to polish to the highest degree, and also for light deburring.


6. What is the benefit of polishing crankshafts?

There are undoubtedly numerous benefits of polishing crankshafts.

The first benefit is that it enhances the performance of an engine.

Polishing does so by removing minute imperfections found on the surfaces of the crankshaft, which undoubtedly hinder your engine’s performance.

The second benefit is that polishing improves the looks of your crankshaft by making them look new and sleek.

The third benefit is removing these minor blemishes increases the lifespan of your crankshaft.

Polishing makes your crankshaft stronger and also reduces rapid wear and tear that comes from minor burrs and other blemishes.


Bottom line:

Polishing crankshafts is beneficial for your engine’s performance.

It is also necessary for a longer lifespan of your crankshaft.


7. What is the benefit of using mass finishing machines to polish crankshafts?

Now, using mass finishing machines for polishing your crankshafts is highly beneficial.

The first advantage is that you get to polish your crankshafts rapidly.

Crankshaft grinder machines complete the polishing process quickly and efficiently.

The second benefit that you get is that you can polish several crankshafts at the same time.

They polish in mass, which saves a lot of time and energy.

The third benefit is that you’ll get a clean and uniform polish.

With the help of polishing media, you can clean even the most intricate corners of your crankshafts.

The fourth benefit that you get is that they do not alter the dimensions or shape of your crankshaft.

This maintenance of design and shape is made possible by limiting part-to-part contacts.

The fifth benefit is that using these machines is relatively easy.

You can issue commands by using these machines’ control consoles. They are reasonably easy to use.

They are also impeccably accurate.

If you are planning to start a business that deals with crankshaft polishing service, then you can invest in one of these machines from Inovatec.

Inovatec has put up different types of crankshaft polisher for sale. So, you can choose any depending on your polishing requirements.

You can also use the same machine for crankshaft refurbishment.

Bottom line:

There are certainly many benefits that you can get from using mass polishing machines to polish your crankshafts.

These that are highlighted here are the primary ones.

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